Object should become fluid later in an animation

Support Animation and Rigging
1

Hi

First of all, thats my first post so hello to all.
Then I have to say that I am from Germany and my English is not the best, but I will do my very best :wink:

Now my Problem.

I want to have an animation, where Objects came out of the water (not fluid at this time) and than after a while became fluid an fall or splash into the water where they came from.

But I have no Idea, where I could say before Baking the Simulation that the Objects for example became fluid at Frame 50.

Hope you could understand my English and theres no other Thread with this question otherwise I am very sorry and hope you could send me the link :wink:

so hope you could help
your Martin